Responses
The first thing I'd want to do after a near death experience is reconnect with my loved ones and yes that includes sex with my lover. I'd want to feel alive with all of my senses so I can relate to both Kasan's and Igen's motivations for this. Kasan did get 4 days of sleep. If it were a matter of horniness Igen could have had him anytime.

Will you PLEASE stop having sex with Kassan while he's in such a weakened state!??
Is the power of your boner so strong that you can't just WAIT until the poor chicken nugget is feeling better?? So damn rude.